Electromagnetic switch



Ap rll H19, 1927. N. TOGAM] 5,509

ELECTROMAGNETIC SWITCH Filed April 27. I923 cl L g C i g 6 g V i {2' 1/"@ 1 F '5, I L\ i k f r f L p.174 I. 6 I I i 4, w i 6 7 c 6' 4 12/ a T H I f FIG-- 2. 6% .g v 8 .i... -.lfiiiiiiiiiiiiill.

In day and night is required anot zlitactpi ntact Patented Apr. 19; 1921;

PATENT OFFICE.

IOBUIUII TOGAII, OI JAPAN.

v ELEGIBOIAGHBTIO SWITCH.

Application sled aim :7,

My invention relates to improvements in autggiiatic electricaldiftributing tpparattghs em y' as eectro 1c 'swi at each l ir anc point of 122% lines and 5 has for its ob'ect to distribute electric power to the branch line'scontinuously day and night, from two sets of on lines differing from each other in the time of elecordinary systems of electric supply slrgvided with twosets of tron hnes v ering in the time of electric supply, as

i for instance day-time lines e night-time lines, where a continuous supply through or set of continuous transmission lines, for instance day and nifillit lines, is an indispensible necessity. e present invention I w: with such continuous tron lines, and so electric power can be supplied to branch flines automatically day and night from two.

sets of transmission lines by special switches I provided at each branching point. Accordmg to the present invention two sets of confixed or moving, are provided in and switch and are connected to the reme. semi Io. 035,110.

lines, and while-electric power is supplied to one set of the transmission lines, the branch line is kept connected without fail to said set, and the connection is never reversed until electric supply to said set is stopped,

so that no danger occurs even if the electric power is accidentally supplied to the other set oftrans mission lines at the same time.

The accompanying drawing shows an example of the-distributing apparatus of the present invention. Fig. l is a diagrammatical view of the. apparatus showing the connection of the lines. *'Fig. 2 is same, show ing the electro-magnet in the idle state. Fi '3 1s a sectional side elevation of the swi used in the present apparatus. Fig. 4- is a sectional elevation of same. Fig. 5' is a detailed sectional side elevation of the switch fictive sets of on lines difiering on an enlarged scale showing the mounting in each other in the time of electric supply, while another set of contact pieces are he Refermf so provided in said switch,mov'ing (c) and t or fixed corresponding to the mounting the first sets of contact pieces, and are connected to the branch lines to which electric. power is to be continuously sup lied. Said moving conieces are 'cally related to the arma ure of an electric-magnet which latter is connected to one set of the transmission lines. While electric power is supplied to said set of t 7 lines the branch lines so are connected to the ormer by the action of u'the electro-magnet, and when electric supply to the ton lines is reversed the branch lines are automatically connected to another set of transmission hnes by the ac- 46 tion of '1! sp or by the weight of the ar- P mature etc. us electric power is distributed to the branch lines continuously day and ni ht from two sets of transmission lines difiering from each other in the time saving a' set of traon lines, namely of the contact pieces.

' to Figures 1 and2 (a), (b)

transmlssiondines di ermg from each other in the time of electricsupply as for instance night-time lines (a), (b), (c) and day-time ,lines (d) (c f). At each branc int of the brenei. lines (It) and (i), to w hi h a continuous distribution of electric power through day and night is retfluired, an automatic electromagnetic switc (1) is provided. Two sets of contact pieces (2) (2) and (3) .(3') are fixed in the reversing switch $1). One set of said contact pieces (2) an (2 are connected to the ni httime lines (6 and (a) by leading wires b) and (c'), an the other set (3) and (3) are connected tothe da -time lines (e) and (f) by leading wires 6;) and ('f'). Another set of contact pieces (4)4and (4'), come spon e to aforesaid. sets of contact pieces, is mova ly arranged in' the electromagnetic switch (1), and said set is directly connected to the branch lines (It) and (i). The electromagnetic switch is also provided with an designate. two sets of electro-magnet (5) the coil of which is connected to a set of the transmission lines, for

instance night-time lines (6) and (0) by leading wires (1)) and (0"). The armature (6) of the electro-magnet (5), is made to be attracted'downwards, when the electro-magnet is deenergized, by the tension of the spring (7) attached at its lower end, or in case said spring is not provided by the weight of the armature itself, and one end of the armature is linked to the moving contact pieces (4) (4), as shown.

ile electric power is sup lied to the night-time lines (a), (b) and c), the electro-magnet (5) in the electromagnetic switch (1) attracts the armature (6) and the moving contact pieces (4) and (4') come in.

contact with one set of the fixed contact pieces (2) (2), so that the branch lines (it) and ('i) are connected to one set ofthe transmission lines and electric power is distributed to the night-time lines as shown in F i 1. When electricsupply to said lines (a), (b) and (c) is stopped and the supply to the day-time lines (a), (d) and (e) takes place, the electro-magnet (5) is deenergized and the armature (6) moves 011? the elect-ro-magnet by the spring (7 or by its own wei ht, .so that the moving contact pieces (4) and (4') move off the fixed contact pieces (2) and (2) and are brought into contact with another set of the fixed contact pieces (3) and (3'), whereby't-he branch lines (h) and (i) are connected to the day-time lines (at), (e) and (f) as shown in Fig. 2. The apparatus is not limited only to the branch lines of two wire system as shown, but can equally be applied to the; branch lines of three Wire system.

The automaticswitch to be used in the apparatus of the present invention may be suit--- ably designed and an example of the preferable constructions is shown in Figures 3 to 5. The armature (6) pivoted at one end on a pivr J (7) is arranged below the e1ectromagnet (5). The coil of the electro-magnet is connected to the night-time lines by leadin wires (6") and (c-'). A supporting bar (8 of insulating material is horizontally fixed at its centre on the side of the core of electro-magnet (5), and at both ends of said bar metal plates (4), (4) are attached around the bar to form a set of the fixed contact pieces. Circular holes are vertically opened at both ends of the supporting-bar (8) through the contact pieces (4), (4) as shown in Fig. 5, and circular rods (9), (9) are loosely fitted into said holes so as to slide freely up and down. The lower ends of said rods are loosely connected by means of pins (10?), (10) to a bar (11) fixed at the end of the armature (6). The sides of the rods (9), (9) are cut plane at (9' )=-,"(9 at their upper and lower parts, and metal pieces (2) (3) and (2) (3'), forming two sets of moving contact pieces are slidably fitted on each rod at a distance larger in some degree than the depth of the fixed contact pieces (4) or (4'), and are pressed forward by springs 12), (12), so that either a set of said moving contact pieces (2) (2) or (3) (3) comes in contact with the fixed contact pieces (4) (4') according to the movement of the rods (9), (9) caused by the attraction or detraction of the armature (6) to the electro-magnet (5). The fixed contact pieces (4), (4') are connected to leading-in-wires (h) (i) which are to'be connected to the branch lines (It) and (i). The moving contact pieces (2), (2) and (3), (3') are respectively connected by cords 0r flexible conductors (13) to terminals (14) which by turn are to be connected to the respective set of the transmission lines through leading in wires (6'), (0) and (e'), (f).

When electric power is sup lied to the night-time lines (a), (b) and c) the electro-magnet (5) of the electromagnetic switch is energized and the armature (6) is attracted as shown in full line in Fi 3'. The rods (9), (9) are elevated thereby, and those moving contact pieces (2), (2') fitted at the lower part of said rods are brought in contact wlth the fixed contact pieces 4), (4), so that electric current flowing t e transmission lines (6) and (0) is distributed to the branch lines (h) and (71) through the contact pieces (2), (2') and (4), (4'). When electric supply to the night-time lines is stopped the rods (9), (9) move downward together with the armature (6), as shown in chain lines in Fig. 3, and the moving contact pieces (3) and (3) fitted at the upper part of said rods are brought in contact with the fixed conductors (4) (4'), so that electric current flowing the day-time lines is distributed to the branch lines.

The springs (12) arranged on the sliding rods serve for ensuring the contact between the fixed and moving contact pieces, and further the operation of the armature is rendered more active by said springs. The coil of electro-magnet is preferably connected to the night-time lines for the reason that the heating of electro-magnets are lessened by the descent of temperature at night.

I claim r A circuit controller including a casing, an electro-magnet suspended inthe casing and embodying a yoke, an armature pivoted to swing vertically with respect to the lower end of the yoke, an insulation bar secured transversely of the yoke and provided adjacent the respective ends with openin s, substantially U-shaped hooks straddled about the ends of the bar and having their side portions provided with openings aligning with the openings in the bar and constitut-e rods slidaHe vertically throu h the aligning upper an lower portions of the books which openigfs in the bar and hoc and loosely consistitute the fixed contacts, substantiallypwot at their lower ends to the armature, as and for the purposes set forth. and slidable and yieldingly mounted contacts In testimony whereof I' have afiixed my 5 onthe rods ad'acent the upperand lower ends signature.

thereof fora ternately contactingwith the NOBUFUMI TOGAMI. 

